Control device and its manufacturing method

ABSTRACT

A small control device assembled efficiency is presented. The control device includes a door for releasing a control unit when a general user connects wiring, and a door for releasing a power supply unit for maintenance service. The control device may further includes a door locking mechanism, a partition wall for separating the control unit and power supply unit, and a mechanism for mounting components on both sides of the wall in a three-dimensional space. A notch may be formed in the wall. Moreover, the control device may include a mechanism for releasing a rear side of a case from the top, and a mechanism for releasing at least one side of the case.

FIELD OF THE INVENTION

[0001] The present invention relates to a control device having a control unit and a power supply unit disposed inside thereof and a method of manufacturing the device.

BACKGROUND OF THE INVENTION

[0002] In a control device having a control unit and a power supply unit disposed inside a case, components are attached to the inner side of the case, usually to the lower side or lateral side. In conventional control devices, the case is often designed to be open from only single side, and it is thus difficult to install the components and to connect wiring when the case is reduced in size. Further, the high voltage area of the power supply unit must be enclosed with a cover to prevent electric shock due to a touch in maintenance works, and the assembling of the control device is much complicated.

SUMMARY OF THE INVENTION

[0003] A small and easy-to-assemble control device, and its manufacturing method is presented.

[0004] The control device comprises a case having a control unit and a power supply unit disposed in its inside, a first door at a position corresponding to the control unit in the case, and a second door at a position corresponding to the power supply unit in the case. The control device may further comprise a partition wall between the control unit and power supply unit and between the first door and second door. At least a part of the power supply unit and control unit is disposed at both sides of the partition wall.

BRIEF DESCRIPTION OF THE DRAWINGS

[0005]FIG. 1 is a structural diagram of a control device according to an exemplary embodiment of the invention.

[0006]FIG. 2 is a configuration of components of the control device according to the embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0007] An exemplary embodiment of the invention will be described by referring to FIG. 1 and FIG. 2. FIG. 1 shows the control device after assembling according to the embodiment. FIG. 2 shows it before assembling.

[0008] In FIG. 1, a door 1 is for opening and releasing a control unit connected by a general user. A door 2 is for opening and releasing a power supply unit to be accessible for a maintenance. A partition wall 3 separates the control unit from the power supply unit and mounts components on its both sides.

[0009] The door 2 opens only at the time of maintenance and may be locked with a key. By this structure, without sacrifice ease of maintenance, the control unit accessible by the general user for wiring is isolated from the power supply unit handled only at the time of maintenance. And the control device includes the components at high density, and thus, is reduced in size.

[0010] A fulcrum 4 is further provided for releasing the door 2 from the top, and the door 2 is hooked on the fulcrum. The weight is supported by the fulcrum 4, and the door 2 can support a heavy object easily.

[0011] The door 2 may be provided detachably in the case.

[0012] A mechanism which once stops releasing the door 1 or door 2 suppresses a length of the wiring to that enough to reach the release-stopping position even if the wiring of the door 1 or door 2 extends to the an access 5 or an access 6 to be released. In other words, the door is once opened to the release-stopping position, the wiring connector is removed to make one end of the wiring free, and thus, the door 1 or door 2 can be fully opened. Therefore, the wiring is disposed around the door 1 or door 2 more freely, and a length of it is suppressed to that enough to reach the release-stopping position.

[0013] When the control device is assembled, components are mounted on the partition wall 3, and wiring connectable on the partition wall 3 is connected. As a result, the assembling and wiring works in a narrow area in the control device can be done outside the control device, so that the assembling work may be easy.

[0014] When the partition wall 3 is assembled into the control device, the wall 3 is pushed in with a notch 7 and a notch 8 of the partition wall 3 supported by hands 9. The notch 8 may be omitted if at least one side 10 of the case of the control device is released. Thus, the partition wall 3 may be easily assembled into the control device.

[0015] Further, cables connecting the control (light current) components and at least high voltage (heavy current) components may pass through the notch 7 or notch 8. 

What is claimed is:
 1. A control device comprising: a control unit, a power supply unit, a case housing said control unit and said power supply unit inside, a first opening/closing section provided at a position corresponding to said control unit in said case, and a second opening/closing section provided at a position corresponding to said power supply unit in said case.
 2. The control device according to claim 1 further comprising a lock mechanism provided in the second opening section.
 3. The control device according to claim 1 or 2 further comprising a partition wall in said case between said control unit and said power supply unit and between said first opening/closing section and said second opening/closing section, wherein at least a part of said power supply unit is mounted on a first side of said partition wall, and wherein at least a part of said control unit is mounted on an opposite side of the first side of said partition wall.
 4. The control device according to claim 3 , wherein a notch is formed said the partition wall.
 5. The control device according to claim 4 further comprising a cable connecting between said control unit and said power supply unit through the notch.
 6. The control device according to any one of claims 1 to 5 , wherein said second opening/closing section is provided detachably in said case.
 7. The control device according to any one of claims 1 to 6 , wherein said first opening/closing section and said second opening/closing section open in a different direction from each other.
 8. The control device according to any one of claims 1 to 7 further comprising a side provided detachably in said case.
 9. A method of manufacturing a control device including a control unit, a power supply unit, a case, and a partition wall having a notch provided between said control unit and said power supply unit in said case, comprising the steps of: mounting at least a part of said control unit on a first side of said partition wall, mounting at least a part of said power supply unit on an opposite side of the first side of said partition wall, connecting said control unit and said power supply unit through the notch, and assembling said partition wall into said case. 